Toploader 4 speed shifter tech | Pirate 4x4 1.34% - Uses 24 tooth planet gears, a 25 tooth sun gear and a 74 tooth ring gear. . Multiple speed transmissions use multiplication of gears to create different speeds. Competition Eliminator, Super classes, Top Dragster and Pro Stock cars are typical classes where you will find the New Generation LENCO. In all instances you will require a LENCO reverse unit to achieve reverse movement. Lenco burnout procedures | InsideTopAlcohol Adding progressively different ratio independent gear housings behind each other allows Lenco to create two-speed, four-speed, five-speed, and even six-speed transmissions. Once installed, make sure the air servo is loose and can turn freely. at a lesser price than our full race units. multi lever system or with the optional, more compact CO2 setup. The boat clutch provides gentle engagement and disengagement. Screw air servo into case until it bottoms out against the jam nut. Shown with our boat bellhousing. Each gear is engaged by pulling down on the shift lever, to activate the clutch mechanism for each gear set. They work by using a sun gear that is also attached to a sprag clutch, three planet gears, and a ring gear. Shift with either our patentedmulti lever system or with the optional, more compact CO2 setup. 1.41%Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. You will need to add a LENCO reverse unit in order to back up. The original ST1200 came with a cast aluminum case, gasket seals, and a range of selectable gear ratios. fine tuning your available power application to specific track conditions. Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. 1.368%Uses 21 tooth planet gears, a 25 tooth sun gear and an 74 tooth ring gear. Once all cases have been shifted the entire transmission assembly is locked in the final 1:1 direct drive ratio. When you select a gear, the gear shaft moves a synchronizing gear that looks like a toothed collar. When this occurs, the ring gear becomes the dominant gear1:1 (final drive ratio). The ST1200 is available with all popularbellhousing patterns - Ford, GM, MoPar and our own five-bolt design. ST1200 Street Strip 1.44%Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Originally the ST1200 was only offered with a selection of five gear ratios (1.25, 1.31, 1.38, 1.44, and 1.48). The gearset in the third case alone, 1.31:1, determines the third gear ratio. We can supply practica.. Lenco Racingthrowout bearing collars are machined from premium aircraft grade billet aluminum .. Lencodrive 3 Speed and Reverse | Lenco 1.566%Uses 18 tooth planet gears, a 45 tooth sun gear and an 81 tooth ring gear. 1.46% - Uses 22 tooth planet gears, a 37 tooth sun gear and a 80 tooth ring gear. 1.21%Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. 1.25% (1.252) - Uses 24/28 tooth planet gears, a 23 tooth sun gear and a 78 tooth ring gear. Lenco for street use | Team Chevelle 1.50% Uses 22 tooth planet gears, a 44 tooth sun gear and an 88 tooth ring gear. 4,600. Multiply the two rear case gearset ratios to determine the second gear ratio of 1.80:1. When the transmission is shifted a clutch pack compresses the rotating sun gear assembly to the direct drive central sun gear. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. This intermediate shaft connects this planetary gear set to subsequent planetary gear sets which make up the modular nature of this transmission. It's a transmission that will set any street/strip car apart from the competition, with performance to match its new all-aluminum billet CNC looks. The internal action of a LENCO is such that when the transmission is in first gear the dedicated planet gear assembly provides the launch ratio. RATIO CHART Lenco Transmission Overview 1.46%Uses 22 tooth planet gears, a 37 tooth sun gear and an 80 tooth ring gear. Call our technical department at (909) 673-9080 or email us here with any questions you may have concerning function or applications. Stay up to date with news and promotions by signing up for our monthlly newsletter. Since the 30 wt oil is thicker it takes a . If the shift pressure is set to your application lock the jam nut your finished, if not you then need to add shim to raise pressure or subtract shim to reduce pressure. .. All Lenco coupler clamps are machined from 7075 aircraft grade aluminum. As with the CS1 Standard Design, the New Generation CS2, CS3 and CS4 can be shifted by lever or our CO2 system. All LENCO transmissions operate in basically the same way and if you have any questions about servicing your trans please call our tech line at (909) 673-9080. Lenco Street Transmissions - Super Chevy Magazine - MotorTrend All Rights Reserved. Smaller diameter and shorter length make this transmission a practical choice for use in restricted confines and instances when you have limited distance from the engine to the rear end. All LENCO transmissions can be shifted with levers or a CO2 system. Attach air lines and your race ready. This is a 1971-72 901 transmission converted for use as a side shift 914 gearbox. The total amount of gear reduction depends on the amount of housings and the overall application of the transmission. Lenco celebrates over forty-five years of the engineering and manufacturing of the most successful drag racing transmissions ever built. 1.16%Uses 21/36 tooth planet gears, a 22 tooth sun gear and a 79 tooth ring gear. The choice is yours. All Rights Reserved. Stay up to date with news and promotions by signing up for our monthlly newsletter. The first gear set is multiplied by the next, which is multiplied by any subsequent gears sets to eventually reach the final drive ratio of 1:1 where the output shaft is spinning as fast as the input shaft (or overdrive which is any ratio lower than 1 like .85:1). Screw air servo into case until it bottoms out against the jam nut. The biggest benefit to Pro Streeters is that you don't have to worry about overheating, flashing the torque converter or other maintenance costs-as there are none. 1.297% Uses 26 tooth planet gears, a 22 tooth sun gear and a 74 tooth ring gear. Th.. The ST1200 comes with aluminum cases instead of the magnesium style race units. Run the air servo jam nut and o-ring up the threads on the servo. You always need to come out of the water box in high gear to prolong the life of the transmission. Here's some fuzzy footage showing the operation. Going to low on the pressure you get lazy shifts and faster transmission clutch wear requiring frequent changes. First you need to determine which style clutch packs you are working onsee chart. Now rotate counter clockwise 1/2 to 1 turn and tighten lock nut. We found the small Sprags service life growing shorter and shorter, so we have discontinued it and highly recommend upgrading to our large Sprag assembly. 1.19% Uses 21/33 tooth planet gears, a 22 tooth sun gear and a 76 tooth ring gear. Polishing the shift fork helps a lot for consistent shifts. These four gears (sun gear and three planet gears) sit in a planetary carrier that holds them together as a unit. It has a selected gear ratio, and is the first speed of the transmission that is translated to the output shaft that drives the wheels. up to the CO2 configuration or vice versa. 2 Speed + reverser with Std output: 17.500". If needed you may vary 1 full turn up or down from your 2 turns out in order to achieve the shift pressure desired. The middle case would also contain a 1.37 planet gear set. 1.405% Uses 23 tooth planet gears, a 32 tooth sun gear and an 79 tooth ring gear. In general, all LENCO transmissions are a planetary design. The counter shaft has fixed associating gears that are permanently meshed with the loosely connected gears on the output shaft. Large Strips and Clips Sprag Assembly - Thisis a specialized sprag and is used in applications where tire shake is a constant problem. The ring gear is then pressed inside of the bearing. The arm must be free to move in all directions. 1.21% Uses 21/31 tooth planet gears, a 24 tooth sun gear and a 76 tooth ring gear. Porsche 911-06 side shift transmission for 914 4 or 6. The Lencodrive comes as a 2 speed with reverse. 1.438%Uses 20 tooth planet gears, a 32 tooth sun gear and a 73 tooth ring gear. As with all Lenco transmissions the ST1200 is a planetary design and comes with up to 6 forward speeds. Despite its reputation among racers and its many uses today, which include everything from boats to alcohol dragsters, many enthusiasts have not caught on to the fact that there IS a street version available. 1.256% Uses 32 tooth planet gears, a 22 tooth sun gear and a 86 tooth ring gear. 1.356%Uses 23 tooth planet gears, a 26 tooth sun gear and a 73 tooth ring gear. Magnesium cases are used for both the CS2, CS3 and CS4. The arm is held into the servo piston by a set screw. In all instances the transmission is then shifted to a 1:1 direct drive ratio by depression You may choose any conventional input shaft spline. Choice of standard or new generation reverses. Pressure set-up kit Our shift pressure set-up kit consists of a separate adjustment tower, lever, pull scale and chart of recommended pressures. If it takes over one second to reach full pressure at the pod, you have a restriction (regulator, line, button). Add fluids as necessary and install fill plug. drag racing, CS-1 style or center shift transmissions: the sun gear from rotating in one direction. Material Gears. Enough to make the run and turnoff before it releases. 1.37% - Uses 26 tooth planet gears, a 31 tooth sun gear and a 83 tooth ring gear. Choice of ratio. Those two speeds are (1) the lower underdrive ratio and (2) the direct 1:1 final lock-up drive ratio. Stay up to date with news and promotions by signing up for our monthlly newsletter. 1.44% Uses 22 tooth planet gears, a 35 tooth sun gear and a 79 tooth ring gear. Lenco transmissions were first made popular in the early '70s when NHRA Pro Stockers needed a gearbox that was up to the task of 9-second elapsed times. Lenco transmissions essentially combine the best of a manual and automatic transmission into one unit. Please call for ordering or technical information. Screw air servo in (clockwise) until you see the rotary plate start to shift, now screw air servo Out (counter-clockwise) until the rotary shift plate stops moving. The Lenco Racing Lencodrive 2 Speed Automatic Transmission represents our response to people who hav.. Small Sprag Assembly -This is a our small Sprag, note the snap ring in the outer race and single brass thrust washer. Adjustment: 1.48%Uses 22 tooth planet gears, a 40 tooth sun gear and a 83 tooth ring gear. 1.31% Uses 27 tooth planet gears, a 25 tooth sun gear and an 80 tooth ring gear. specific design will suit you best. 1.73% Uses 14 tooth planet gears, a 76 tooth sun gear and a 104 tooth ring gear. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. Air servo or max-adjust shift tower and lever. 1.28% Uses 32 tooth planet gear, a 25 tooth sun gear and an 89 tooth ring gear. Add bellhousing depth to above lengths for total length: Lenco aluminum, Titanium or Browell steel: 7.200". Refining the machining process of how the gears are made and even designed resulted in more efficient gears that mesh together easier than the previous version. Lenco has gone through a lot of changes in the past year, with a new owner and new location, the team at Lenco set out to redesign, revamp, and redefine the ST1200 street transmission as the new . gearset/ratio and when connected to additional cases multiple ratios are realized. from DarkSide Lenco Racing | The World's Best Racing Transmissions When this same section is shifted the Sprag then allows the sun gear to rotate in the same direction as the crankshaft. Throwout bearing collar (4 & 5-speed only). ST1200 4 Speed with Reverse and Shifter | Lenco LENCO transmissions are shipped with the shift levers removed in order to prevent damage during shipping. 1.280%Uses 27 tooth planet gears, a 21 tooth sun gear and a 75 tooth ring gear. All three units shifted equal final drive ratio of 1:1. The 2 speed, including reverse, bellhousing and lining weighs approximately 108 lbs. There are two different size air servos for the New Generation transmissions.The small air servo (2.5"piston diameter) and the large air servo(3"piston diameter) for the CS-2 large case transmission and Lencodrives. Rotate air servo into case until you see the set screw in the air servo piston boss inside the case. A typical lever shift assembly Consists of hand levers, activation rods, detent levers, rod towers, adjustment nuts, clevises, heim ends, friction washers, mounting bracket and all 1.24%Uses 26/31 tooth planet gears, a 23 tooth sun gear and an 80 tooth ring gear. Light weight components.

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